Step 1: Start Tracing

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To start tracing with OPE, do the following:

• Set the environment variable OS_OPE_TRACE=auto.

This starts OPE tracing automatically without changing your application.

• Set the environment variable OS_OPE_TRACE_FILE= myappl.trf.

Note that the trace file name myappl.trf is an example. You can use any valid file name.

It specifies the name of the trace file to which OPE writes the collected data. OPE adds the current process ID to the specified name so that concurrently running applications can use the same start procedure.

• Start your application.

For each session within the application OPE creates a trace file of the form myappl.trf.pid#.sid#, where sid# is a session ID . To look at the files, you need the Analyzer. The following section tells you how to work with it.